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x86: Fixed NULL function pointer dereference in AMD microcode patch loader. 

Dereference took place in code part responsible for manual installation
of microcode patches through /dev/cpu/microcode.

Signed-off-by: Peter Oruba <peter.oruba@amd.com>
Cc: Peter Oruba <peter.oruba@amd.com>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Oruba 2008-08-01 12:46:46 +02:00 committed by Ingo Molnar
parent d33dcb9e7d
commit 636a317816
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/microcode.c
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@ -127,7 +127,8 @@ static int do_microcode_update(void)
old = current->cpus_allowed;
while ((cursor = microcode_ops->get_next_ucode(&new_mc, cursor)) > 0) {
error = microcode_ops->microcode_sanity_check(new_mc);
if (microcode_ops->microcode_sanity_check != NULL)
error = microcode_ops->microcode_sanity_check(new_mc);
if (error)
goto out;
/*